Re: HYB: evaluating seedlings

Hi Bill,
I plan on trying some of this. I have a couple of iris that my family want pieces of, but I am ot willing to tear up the whole clump and give most of it away. especially since the clump is only in it's second year of bloom here. I am going to take one rhizome off of it and try it. Then I have a white that is really an increaser. Wish I knew the name of it. I thought i owuld try a piece of it just for camparison and because I have a lot of it to experiment with. If it works I have others I would like to have more of.

Wendy
  ----- Original Message ----- 
  From: Bill Shear 
  To: IRIS 
  Sent: Tuesday, April 23, 2002 5:42 AM
  Subject: Re: [iris-talk] HYB: evaluating seedlings


  On 4/22/02 4:29 PM, "Mike Sutton" <suttons@lightspeed.net> wrote:

  > i have heard about that but have not tried it personally.  Don't see how it
  > would much increase the increase.  If you cut and divide rhizome it seems
  > that it would still only increase at the toes anyway so instead of having a
  > one year clump with 4 increases you have 2 one year clumps with two
  > increases.  Might be wrong on that because I haven't tried it, would love to
  > hear some results of the practice.
  > Mike
  > 
  > ----- Original Message -----
  > From: <wmoores@watervalley.net>
  > To: <suttons@lightspeed.net>
  > Cc: <iris-talk@yahoogroups.com>
  > Sent: Monday, April 22, 2002 6:37 AM
  > Subject: Re: [iris-talk] HYB: evaluating seedlings
  > 
  > 
  >>   Mike, there is talk on another group about cutting rhizomes
  >>   into sections like potatoes and planting for faster propogation.  Have
  > you
  >>   ever tried this?

  I think the rationale for this is that the new increases at the toe produce
  hormones that suppress growth in buds further back on the rhizome.  If the
  rhizome is cut into sections, perhaps as small as one bud per section, these
  will be freed from inhibition and sprout.  Same thing happens (saw it this
  spring) when old rhizomes are accidentially rototilled into a bed and cut in
  many bits.   Each bit (if it does not rot) produces at least one new shoot.
  Sometimes this happens when the rhizome piece is deeply buried, and the new
  shoot develops at the top of a long stolon that reaches the surface.

  Louisiana iris growers often advocate taking old "back" rhizomes and
  splitting them lengthwise, then planting.  I've tried this and it produces a
  "row" of new increases.  Similarly, when you divide a cattleya orchid, the
  old "back bulbs" will usually produce new sprouts, something they will not
  do while still under the influence of the rapidly growing new pseudobulbs.

  So in theory, it would be worth a try.  How about someone with a lot of
  space trying an experiment?

  Bill Shear


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